ELASTOSPRAY® LWP spray insulation
High density, closed-cell spray foam insulation, developed for internal roofs, floors, and walls (cavity, timber frame, masonry) of domestic, industrial, and agricultural buildings. ELASTOSPRAY LWP provides a superior structural, durable and seamless airtight insulation solution. Fully certified for use following UK and Irish building regulations.
Features and benefits
- Fast and easily applied with no waste, minimum fuss, and maximum effect
- No VOCs, CFCs, formaldehyde and has no harmful side effects
- Low thermal conductivity
- Seamless airtight insulation system with no joints or gaps
- Adds structural strength prolonging the life of the building
- Will not settle or sag and will last the building’s lifetime
- Can prevent condensation
- BASF Polyurethanes is certified to BS EN ISO 9001, ISO/TS 16949: 2002 and BS EN ISO 14001
- KIWA (BDA) independently certified
- Applied throughout the UK and Ireland by BASF Foam Masters
Downloads
Certification
ELASTOSPRAY® LWP roof insulation
Pitched roof insulation
In times of rising energy costs and shortage of living area, loft conversions are becoming increasingly popular. ELASTROSPRAY LWP can be applied from inside the loft space without the need for re-roofing, adding another room to the house, cost effectively.
The roof rafters of existing homes are normally just 100mm to 200mm thick. The thickness of insulation with conventional material between the rafters is often not enough to meet today’s U-value requirements. ELASTROSPRAY LWP’s low thermal conductivity and high insulating performance means there is no need to extend the depth of rafters which is costly in terms of both time and money. Using this proven spray foam process, ELASTROSPRAY LWP is simply sprayed between the timber rafters without the need for laborious cutting and fitting. This produces a solid highly efficient airtight thermal insulation.
- prevents air leakage
- seamless insulation reducing thermal bridges
- no laborious cutting and fitting of the insulating material
- rapid installation
- fully certified for use in accordance with both UK and Irish building regulations
New pitched roof insulation
ELASTROSPRAY LWP spray foam insulation is applied directly to the underside of breathable roofing membrane between timber rafters in tiled or slated pitched roofs. The spray insulation material can be installed to any thickness to achieve preferred u-values and demonstrates an impressively high level of airtightness thereby adding to the systems superior thermal performance. ELASTROSPRAY LWP has a measured water vapour permeability and so does not compromise the performance of any breathable roof membrane. ELASTROSPRAY LWP is installed by trained and accredited Foam Master contractors throughout Ireland using specialist spray foam equipment. Certain refurb scenarios may involve a non-breathable roof membrane. A rafter-slide it installed to the underside of the roofing felt to act as a separator between the foam insulation and the felt underside. This allows for a 50mm ventilated airgap as required by building regulations.
Certification
BASF ELASTROSPRAY LWP spray foam is both NSAI (National Standards Authority of Ireland) and BBA (British Board of Agrement) certified.
Technical data
| Specification | Spray applied polyurethane foam between rafters, directly onto breather membrane |
| NBS clause | P10 15A |
| Air leakage (50mm) | 0.0033m3hrm2 |
| Conforms to | Part L1A 2010, Appendix A |
| Lambda 90/90 | 0.025W/mK |
| Fire rating | Euroclasss E |
| Water vapour diffusion resistance factor | 61.12 |
| Adhesion to roof tile underlay | 232kPa |
U-values
| Thickness of WALLTITE (mm) | U-value (W/m2K) |
|---|---|
| 200 | 0.13 |
| 175 | 0.16 |
| 150 | 0.18 |
Existing pitched roof insulation
ELASTROSPRAY LWP spray foam insulation is applied directly to the underside of breathable rafter slide between timber rafters in tiled or slated pitched roofs. The spray insulation material can be installed to any thickness to achieve preferred u-values and demonstrates an impressively high level of airtightness thereby adding to the systems superior thermal performance. ELASTROSPRAY LWP has a measured water vapour permeability and so does not compromise the of the breathability of the roof structure. ELASTROSPRAY LWP is installed by trained and accredited Foam Master contractors throughout Ireland using specialist spray foam equipment.. The rafter slide is installed to the underside of the existing roofing felt to act as a separator between the foam insulation and the felt underside. This allows for a 50mm ventilated airgap as required by building regulations.
Certification
BASF ELASTROSPRAY LWP spray foam is KIWA BDA certified.
Technical data
| Specification | Spray applied polyurethane foam between rafters, directly onto breather membrane |
| NBS clause | P10 15A |
| Air leakage (50mm) | 0.0033m3hrm2 |
| Conforms to | Part L1A 2010, Appendix A |
| Lambda 90/90 | 0.025W/mK |
| Fire rating | Euroclasss E |
| Water vapour diffusion resistance factor | 61.12 |
| Adhesion to roof tile underlay | 232kPa |
Typical U-values
| Thickness of WALLTITE (mm) | U-value (W/m2K) |
|---|---|
| 200 | 0.13 |
| 175 | 0.16 |
| 150 | 0.18 |
External roof insulation
As with the insulation of solid flat roofs, thermal insulation of industrial roofs is a common application with ELASTROSPRAY LWP spray insulation. Roofs of warehouses, production facilities, exhibition and sports halls are normally made of profiled metal sheet and have relatively large spans. These lightweight roof constructions require a lightweight insulating material to prevent loading issues produced by snow, wind and rain.
Because of it’s in-situ installation properties, ELASTROSPRAY LWP spray foam can be applied to the metal sheet profile seamlessly, coating both the peaks and troughs in the profile. The insulating layer should to be provided with UV protection in the form of a waterproof coating .
- low weight of the insulating foam
- adapts to any profile without gaps
- large areas can be treated in just one day
- high compressive strength, dimensionally stable
Agricultural Insulation
Agricultural buildings such as stables, barns and crop stores are exposed to major stresses. High levels of humidity and condensation affect the building construction, along with external weather conditions such as storms, rain, snow, hail and heat.
ELASTROSPRAY LWP spray foam can be used to both insulate and prevent condensation in a single application. The cured airtight material provides effective protection from draughts and can help strengthen the structure.
ELASTROSPRAY LWP spray foam has a positive effect on the life and value of the fabric of the building.
- prevents condensation
- adapts to any shape without joints
- reinforces the building construction
- inert material
- rapid, economic application saves energy costs
Existing pitched roof insulation - no felt
ELASTROSPRAY LWP spray foam insulation can be applied directly onto the underside of existing slate or tiled roofs where a roofing membrane is absent. The foam insulation seals any air gaps, preventing the ingress of windblown snow, rain, dust and unwanted air infiltration and has a vapour permeability that permits the drying out of roof timbers following periods of solar radiation. ELASTROSPRAY LWP insulation is applied between rafters in sloping ceiling areas and loft conversions and is ideal when space is at a premium due to its superior thermal performance. Plasterboard can then be fixed to the rafters. In applications such as barn conversions the foam spray is dubbed out with a coat of bonding plaster and then finish plaster. Existing structures must be in a good state of repair with no evidence of rain penetration or damp. Defects should be made good prior to installing the product. ELASTROSPRAY LWP also reduces airborne noise pollution from air and road traffic. BASF ELASTROSPRAY LWP is applied throughout Ireland by trained and accredited Foam Master contractors.
Certification
ELASTOSPRAY® LWP has undergone various performance tests. Certificates are available on request.
Technical data
| Specification | Spray applied polyurethane foam between battens and rafters, directly onto existing tiles or slates |
| NBS clause | P10 15A |
| Air leakage (50mm) | 0.0033m3hrm2 |
| Lambda 90/90 | 0.025W/mK |
| Fire rating | Euroclass E |
| Water vapour diffusion resistance factor | 61.12 |
| Adhesion to tiles | 123kPa |
Typical U-values
| Thickness of WALLTITE (mm) | U-value (W/m2K) |
|---|---|
| 190 | 0.14 |
| 160 | 0.16 |
| 140 | 0.18 |
ELASTOSPRAY® LWP wall insulation
Internal wall insulation
ELASTROSPRAY LWP closed cell spray foam insulation on the inside of external walls is an effective airtight insulation solution for both new build and existing constructions. Older buildings with listed facades or those worth preserving often have low thermal insulation which can be improved by more than 60%by internal insulation. Installation is also comparatively cost-effective because no scaffolding is required for the building and it can be applied on a room by room basis. Since the internal surface temperature of the wall is increased by approx. 2 to 4 degrees, this has a positive effect on the indoor climate.
ELASTROSPRAY LWP spray foam insulating material is easy to apply to the inside of the external wall between timber or steel studwork by accredited BASF contractors. After a short curing time, the insulating layer is cladded on the room side using plasterboard. Comparatively little living space is lost due to the excellent insulating performance of even a thin layer of Elastopray LWP.
- flexible internal wall design
- rooms heat up rapidly
- vapour barrier may not be absolutely necessary
- comparatively little loss of space
- certified for use in accordance with both UK and Irish building regulations
Timber frame insulation
Timber frame construction is typical in the UK and Ireland. As the name suggests, this method of construction relies on a timber frame as a basic means of structural support. The outer leaf is typically stone, brick, render or timber, to suit the local district or planning requirements.
ELASTROSPRAY LWP is applied between the studwork of the timber frame for thermal insulation. The low thermal conductivity of the material has clear advantages here because, despite low wall thicknesses, a comparatively high insulating performance is achieved. The cured spray foam guarantees additional support and stability for the whole of the timber frame construction. The “in-situ” application of the foam also guarantees airtightness of the structure, something traditional insulation methods cannot do. There must be an air gap between the external-facing and the insulated timber frame for ventilation.
- space-saving wall construction
- rapid assembly and insulation
- individual facade design
- guaranteed air barrier
- certified for use in accordance with both UK and Irish building regulations
ELASTROSPRAY LWP foam insulation is spray applied directly between timber studwork onto the OSB at the required thickness. Ordinarily a 25mm cavity will remain between the insulation and vapour control layers to allow for services. ELASTROSPRAY LWP guarantees additional support and stability for the whole of the timber frame construction. The resulting continuous insulation and air barrier system will provide a cleaner, healthier more comfortable environment. ELASTROSPRAY LWP Polyurethane spray is hypo allergenic and so contains no fibres or dust and no noxious vapours. BASF ELASTROSPRAY LWP is very quickly installed by Foam Master contractors using specialist equipment.
Certification
ELASTOSPRAY® is KIWA BDA certified. Certificates are available on request.
Typical detail
- Plasterboard and skim
- Vapour control layer to be lapped over DPC at floor level and returned to window reveal and jambs
- Unventilated air space
- Sheathing ply
- Breather membrane
- ELASTOSPRAY insulation to achieve target U-value
- 50mm air gap
- Noggin to support plasterboard
- Sill plate
- DPC
- Treated timber cill support fixed to timber frame, clad and protected in DPC with insulation set above
Allow for differential movement at ALL openings, i.e. at window cill and window heads, as recommended by the timber frame manufacturer/UKTFA/TRADA: to accommodate differential movement and provide weather resistant and durable joint.
Technical data
| Specification | Insulation sprayed between studwork |
| NBS clause | P10 205A |
| Lambda 90/90 | 0.025 to 0.028W/mK |
| Fire rating | Euroclass E |
| Adhesion to timber | 136kPa |
U-values
| Thickness of WALLTITE (mm) | U-value (W/m2K) |
|---|---|
| 135 | 0.20 |
| 100 | 0.25 |
| 90 | 0.27 |
Masonry wall insulation – steel stud
ELASTROSPRAY LWP spray foam insulation can be applied directly onto a solid dry masonry wall, between steel studwork fixed floor to ceiling. This allows for a layer of ELASTROSPRAY LWP to remain unbridged by studwork thereby helping to reduce u-values further. The foam will engage any light steel framework to provide a more solid, secure wall when compared to other insulation methods. Ordinarily, a 25mm cavity will remain between the insulation and vapour control layers to allow for services. ELASTROSPRAY LWP guarantees additional support and stability for the whole of the wall construction. The resulting continuous insulation and air barrier system will provide a cleaner, healthier more comfortable environment for any “hard to treat” home situation.
Certification
ELASTOSPRAY® LWP is KIWA BDA certified.
Typical detail
- ELASTOSPRAY® LWP insulation between and behind studwork to achieve target U-value
- Galvanised metal frame independent of the wall
- Unventilated air space
- 12.5mm vapour check wallboard and skim finish
Technical data
| Specification | Dry lining of solid masonry wall |
| NBS clause | P10 |
| Lambda 90/90 | 0.025 to 0.028W/mK |
| Fire rating | Euroclass E |
| µ | 61.12 |
U-values
| Thickness of WALLTITE (mm) | U-value (W/m2K) |
|---|---|
| 120 | 0.20 |
| 85 | 0.26 |
| 65 | 0.34 |
Masonry wall insulation – timber stud
ELASTROSPRAY LWP spray foam insulation can be applied directly onto a solid dry masonry wall, between timber studwork either fixed directly to the wall or anchored floor to ceiling. The latter method allows for a layer of ELASTROSPRAY LWP to remain unbridged by timber thereby helping to reduce u-values even further. Ordinarily a 25mm cavity will remain between the insulation and vapour control layers to allow for services. ELASTROSPRAY LWP guarantees additional support and stability for the whole of the timber frame construction. The resulting continuous insulation and air barrier system will provide a cleaner, healthier more comfortable environment for any “hard to treat” home situation.
Certification
ELASTOSPRAY® LWP is KIWA BDA Certified.
Typical detail
- 25mm ELASTOSPRAY® LWP behind studwork
- Treated timber studs set off by wall by brackets
- ELASTOSPRAY® LWP insulation between and behind studwork to achieve target U-value
- Unventilated air space
- 12.5mm vapour check wallboard and skim finish
At corners of internal and external walls to rooms, set frame to external wall back from corner a minimum of 25mm and set batten to line with vapour check wall boarding to receive board end to internal wall.
Techincal data
| Specification | Dry lining of solid masonry wall |
| NBS clause | P10 15A |
| Lambda 90/90 | 0.025 to 0.028W/mK |
| Fire rating | Euroclass E |
| µ | 61.12 |
U-values
| Thickness of WALLTITE (mm) | U-value (W/m2K) |
|---|---|
| 120 | 0.20 |
| 85 | 0.26 |
| 65 | 0.34 |
ELASTOSPRAY® LWP soffit insulation
Soffit insulation
Cold ground floors of a building can occur when a soffit is not insulated against the unheated basement. The low temperatures in the concrete soffit can lead to high energy losses, interstitial condensation and even the formation of mould. This problem can easily be resolved by insulating with Elastospray LWP.
The BASF spray foam system can be applied to most soffits, without costly access equipment. The material is self-adhesive and does not requires labour intensive cutting and fixing. Water pipes and electrical cables can easily be hung beneath the insulation. Any uneven areas such as old vaulted basements, ribbed or waffled shaped soffits, can be rapidly and economically insulated using Elastospray LWP spray foam. The insulation is seamless compared to conventional insulating methods, so there is no risk of cold air penetrating through the ceiling and creating heat loss.
- inhibits mould formation
- suitable for uneven areas and vaulted ceilings
- no drilling and fixing
- seamless insulation under pipes or installations
- certified for use in accordance with both UK and Irish building regulations
